// class Vehicle {
//     engines = 1

//     ignition() {
//         output('Turn on my engine');
//     }

//     drive () {
//         ignition();
//         output('steering and moving forward');
//     }
// }

// class Car inherits Vehicle {
//     wheels = 4;
//     drive () {
//         inherits.drive();
//         output('rolling on all', wheels, "wheels");
//     }
// }

// class SpeedBoat inherits Vehicle {
//     engines = 2;

//     ignition() {
//         output('Turn on my ', engines, 'engines');
//     }

//     pilot() {
//         inherits.drive();
//         output('Speeding through the water with ease');
//     }
// }